Ingot-casting apparatus.



NA.' 79.0,:z'74.l l A PATENT'BDJUNB 9', 1903. y yH. .W.ALAsH.Ay

INGoT CASTING APPARATUS.

ArrLroA'rroN funn snrT. z2. 1m. xo MODEL. f Y Y a SHEETS-sanmz.

No. 730,274. i I A'.r.B1.\ITE1)` JUNE 9, 41903,.

v11. W. LASH.

INGOT CASTING APPARATUS.

` APPLIGATIoN FILED snr'rfzz. 1902. No Monat.. 4 l asuma-SHEET 3.

No. 730,274; Y

UNITED STA-Tas Patentedfxune 9, 1963.

HORACE W. LASHQOF CLEVELAND, OHIO.

lNGOT-I'CASTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 730,274, dated June 9,1903. Appiicmon met' settember 22,1902, smal 110.124.386. (No linden' Toa/Z whom t may concern: Be it known that I, HORACE W. LASH, ofCleveland, Cuyahoga county, Ohio, have invented a new and usefulIngot-Casting Apparatus, of whichthe following is a full, clear, andexact description, reference being had to the accompanying drawings,forming part of this specification, in which- Figure 1 is a sideelevation, partly in section, showing a group of small ingot-moldsarranged for bottom casting and provided with my invention. Fig. 2 is ahorizontal section on the line II II of Fig. 1. Fig. 3 is a verticalsection on the line III III of Fig. 2.

Fig. 4 is a plan view of one of the shear-bars, and Fig. 5 Vis across-section showing the shearing ofthe ingots.

The object of my invention is to provide means for separating ingotsfrom the runners or sprues which are formed in bottom casting; and itconsists in providing the bottomv plate with shearbars which are rammedin the sand immediately under the molds in line with the runners andadjacent to the bottom of the molds, so that when the ingots are castand while the metal is still in a liquid or semiliquid condition theshear-bar can be moved so as to separate the runners from the ingots andrenderl the ingots freely removable.

In the drawings I show a stool formed of three horizontally dividedportions. The lower portion or bottom 'plate 2 is preferably made in twohalves bolted together for con# venience in removing steel in case itiss pilled`V The nowel 3, forming the intermediate.

over. section, contains. th'e baseportion, of silica, sand, or othermaterial, andthe cope et is provided with ythe projecting guides 5,between.l

This cope is 1 'a mold having a runner enteringat the botwhich theingot-molds areiset.

preferably provided with steadypins,as inl the ordinary-iiask, and isalso provided with projecting lips on the under side'to aid in liftingthe sand when the-cope is'lifted'to draw out the pattern. It is alsoiitted with clamps and key-bolts 6 to fasten the central runner down andprevent its being lifted by the pressure of gas or of the molten steel.Each of the three parts is preferably provided withoppositely-projecting trunnions 7 7 to allow handling and lifting by acrane in turning, drawing the pattern, &c. The fountainupwardly-projecting gates or feed-openings In molding the runnersleading into thev bottom of the mold-I ram in the sandshearbars 1l 1l,using, preferably, one shear-bar for each cross-line of molds. Theseshearbars are shown in Fig. 4. and consist of metal bars having openingsl2 therein adapted to register with the runner-openings of the molds andare so set that they can be moved longitudinally.

When the steel is poured into the central fountain, it passes throughtherunners and rises in and fills the molds, and the ingots and the runnersthen constitute one integral casting. It is very important that theingots be easily detachable from the runners in order to render theoperation of casting economical and practical. This I eect by theshearbars, for when the casting is completed and while the metal isstill in a liquid or semiliquid condition these shear-barsare movedforward either by the stroke of a'sledge or ram or by a pushing forceapplied `by suitable power. The bars then act as shears and cut o therunners which extend through the openings 12. ners and can be removedeasily from the molds. Y

-'Within the scope of'iny invention as dened in the claims theconstruction and arrangement of the'moldsand of the runners maybe variedby those skilled in the art, since my invention relates, broadly,to theshearingbars. 'y

IclaimY l., Apparatus forcasting ingotscomprising tom, and a shear-barunderthe mold in prox- Aimity to the'runner, adaptedfto be moved tosever the runner; substantially'as described.

The ingots are thus freed from the run- 2. Apparatus for casting ingotscomprising a series of molds having sand-molded runners extending intothe bottom of lthefmolds for bottom casting, and a shear-bar rammed inthe sand and adapted to be moved to sever the runners;` substantially asdescribed.

3. Apparatus for casting ingots,comprisin g a series of molded runnersextending into the TOO bottom of the molds for bottom casting, andshear-bars rammed in the sand or other material and adapted to be movedto sever the runners, each shear-bar having a plurality of shearingportions adapted to register with a corresponding number of molds;substantially as described.

4. Apparatusforoastingingots, comprising a mold having a runner enteringat the bottom, and a shear-bar under the mold in proximity to therunner, adapted to be moved `to sever the runner, said shear-barconsisting of a metal bar With openings therein for surrounding therunners; substantially as described.

In testimony whereof I have hereunto set my hand.

HORACE W. LASI'I.

Witnesses:

H. D. SMITH, J. C. CROMWELL.

